Essentials of WISC-IV Assessment
Chapter One
INTRODUCTION AND OVERVIEW
There are more individually administered tests of intelligence and IQ available
today than were available at any other time in the history of psychological
assessment and applied measurement. Despite all the innovations
and exemplary quantitative and qualitative characteristics of new and recently
revised intelligence tests, the Wechsler scales continue to reign supreme. In fact,
the Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV)-like its
predecessor, the WISC-III-has quickly become the most widely used measure
of intelligence the world over. Because the latest edition of the WISC represented
the most substantial revision of any Wechsler scale to date, we developed, in the
first edition of this book, an interpretive system for the WISC-IV that was quite
different from Wechsler interpretive systems of the past (e.g., Flanagan, McGrew,
& Ortiz, 2000; Kaufman & Lichtenberger, 1999). For example, the elimination of
the Verbal and Performance IQs required us to reconceptualize previous systems
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